Hardly new news...
UFO squadron filmed flying over California: 3 lights in triangular pattern spotted | Mail Online
My expectation is that it is something to do with autonomous flying wings. There has also been research done on aircraft flying in close formation to reduce overall drag and also for flying in "res cell" to hide a formation. I suspect the lights are a requirement under their rules of the air at night?
All in all, to me, this technology is very easily done these days and hardly qualifies as "the type of exotic" that would attract Black Omega visits!
LJ